Orange Protector Pad 3 x 4 inch. The 3 x 4 protector pad increases the life of the hand pads and serve two important functions. First they are made with a special Velcro hook that provides a much more positive grip to the Abranet than a standard holder can by itself. This prevents the abrasive from coming loose or off during the sanding process. Secondly they prevent damage to the Velcro face on your disc holder which can occur due to the open mesh design of the Abranet.